This nipple meets the standards for ASTM B687, ANSI B1.20.1, NSF 61, AB1953, has a length of two inches, a maximum operating pressure of 190 psi @ 450 Degrees F and is designed for the following applications: air, natural gas, oil, potable water, steam. It has an operating temperature of -20 Degrees F to 400 Degrees F, is resistant to corrosion and is made of ASTM B43-grade red brass. In addition, it has 1 21/64 inch outside diameter, 1 inch inside diameter and is Schedule 40, with 0.126 inch wa